is not video from the army base. miss fires can be stuck in the tube. the cause of monday night's explosion is unknown. >> accidents like these are very rare. that said, anytime you are handling live ordinance, the things you would actually go to war with, there is an inherent risk and an inherent danger that something could go wrong. >> and in hawthorne where a military weapon museum sits in the center of town, residents are in mourning. >> i feel for those people, the mothers, brothers, sisters, fathers, tough way to go. >> six of the wounded marines are still in a reno hospital tonight. three are in serious condition. the other three are listed as fair. one injured marine was released. their names have not been released. live in the newsroom, john alston, abc news. >> thank you very much. a fourth grader's impassioned plea for help. kidso a group of kids go on a march for fellow students.